From: Eric Dumazet <eric.duma...@gmail.com>
Date: Fri, 02 Dec 2016 09:44:53 -0800
> From: Eric Dumazet <eduma...@google.com>
>
> CAP_NET_ADMIN users should not be allowed to set negative
> sk_sndbuf or sk_rcvbuf values, as it can lead to various memory
> corruptions, crashes, OOM...
>
> Note that before commit 82981930125a ("net: cleanups in
> sock_setsockopt()"), the bug was even more serious, since SO_SNDBUF
> and SO_RCVBUF were vulnerable.
>
> This needs to be backported to all known linux kernels.
>
> Again, many thanks to syzkaller team for discovering this gem.
>
> Signed-off-by: Eric Dumazet <eduma...@google.com>
> Reported-by: Andrey Konovalov <andreyk...@google.com>
Applied and queued up for -stable, thanks Eric.
